摘要
本文通过对云南呈贡梁王山5块表土分析,初步研究了主要植物花粉的百分含量与其植物覆盖率之间的数量关系,并用校正系数R值表示。按照R值的大小,分为两组:R>1属于超代表性,包括有松、桤木、马桑、蒿和部分蕨类植物;R<1属于低代表性,包括有油杉、栲和石栎、滇青冈、栎、铁仔。在分析松粉分布特征基础上,认为昆明地区西风急流对松粉的传播是主要因素。
Pollen analysis of five surface samples on Liangwang Mountain of Chenggong (N24°57,E102°37) provides information about the quantitative pollen-vegetation relationship for major plant taxa.Vegetation data with coverage are estimated from each sampling site within the range of 20m.
Acorrding to the difference of R-values, the pollen types could be divided into two groups: 1. R> 1 .over-represented, the type containing Pinus, Alnus, Coriaria, Artemisia and some ferns? 2 . R< 1 , under-represented, the type containing Keteleeria, Castanopsis + Lithocar pus, Cyclobalanopsis Quer-cus, Myrsine.
The pollen deposition of Pinus is dependent on the pollen production and on the wind velocitie and wind direction in the April-May flowering seasons. The west wind is mainly reason to affect distribution of Pinus pollen.
出处
《云南植物研究》
CAS
CSCD
1989年第2期145-153,共9页
Acta Botanica Yunnanica
基金
国家自然科学基金资助项目
关键词
花粉传播
植被
花粉雨
Liangwang Mountain of Chenggong
Surface sample
R-value
Dispersing reason of Pinus pollen
